Cross section data

User Support
1

Hi. I’m Sorry but this post isn’t entirely related to OpenMC. Does anyone have ENDF/B cross section data for 553" & 560" k temperature? Can anyone provide me these?

-Thanks

2

You can set temperatures of Cell or Material instances, or set a default temperature using Settings. The Settings can also be used to ensure temperature interpolation.

3

@imtiaj_hossain The data that is represented in ENDF is at 0 K. If you want cross sections at a higher temperature, they need to be Doppler broadened which can be done with a program such as NJOY. If you want cross sections specifically for OpenMC, you can find pregenerated libraries here: Official Data Libraries | OpenMC. Our libraries have cross sections at 300 K and 600 K and you can ask the code to interpolate between cross sections with:

settings = openmc.Settings()
settings.temperature = {'method': 'interpolation'}